A nurse is preparing to administer heparin 10,000 units subcutaneous every 8 hr. Available is heparin injection 20,000 units/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Identify the given information: Dose of heparin: 10,000 units Concentration of heparin injection: 20,000 units/mL Calculate the volume of heparin injection to be administered: Volume = Dose (units) / Concentration (units/mL) Substitute the values: Volume = 10,000 units / 20,000 units/mL Volume = 0.5 mL